I'm going to be shooting a formal fundraising event in a few weeks (for fun) and was wondering what lens you might recommend. The room is large (400 people) and fairly well lit. I have an external flash but with a room that big I don't expect much from that. I'm thinking that my 35mm f1.8 and my 85mm f1.8 might be my best bets. I love my 18-300mm f3.5-5.6 as a great all-around lens but I'm thinking the small apertures will be an issue. Thoughts?